Year	current US$
1995	630557899.4500035
1996	740308595.2751188
1997	722855557.712466
1998	1074345728.8867078
1999	1133128183.9241738
2000	1140949710.7175536
2001	1315011441.6401358
2002	1460139584.3805904
2003	1694941387.412952
2004	1776841776.6483014
2005	2366586793.3101325
2006	2749896113.3989043
2007	3532916617.16126
2008	4154464756.985696
2009	3786238998.798383
2010	3478709744.6020546
2011	3978698222.875536
2012	4024254216.594171
2013	4443474915.579872
2014	4484257977.639718
2015	3809858157.7278204
2016	4935641697.11488
2017	6779779251.809161
2018	6596820216.925881